Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Robert J Tillotson, DO

Individual provider Emergency Medicine Physician · NPI 1679601983

Robert J Tillotson, DO practises Emergency Medicine in Eau Claire, Wisconsin. Graduated from Michigan State University College of Human Medicine in 1984, 42 years ago. Practices with Mayo Clinic Health System-Northwest Wisconsin Region Inc, a 799-clinician group, works from 4 locations and accepts Medicare assignment. Licensed in Wisconsin.

Years since qualifying
42
Trained at
Michigan State University College of Human Medicine
Licensed in
WI
In the registry since
2007
What do these letters mean?
DO — Doctor of Osteopathic Medicine
A fully licensed physician, trained like an MD with additional musculoskeletal training. Equivalent practice rights in all 50 states.

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Practice location Address checks out

1221 Whipple St
Eau Claire, WI 54703-5270
Phone: (715) 838-5222
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (3)

  • 1400 Bellinger St, Eau Claire, WI 54703-5222 — (715) 838-3635
  • 900 Illinois Avenue, Stevens Point, WI 54481 — (715) 346-5000
  • 900 Illinois Avenue, Stevens Point, WI 54481 — (715) 346-5000

Specialties & licences

Emergency Medicine Physician (primary) Taxonomy 207P00000X · Licence 38499 (WI)

Record details

NPI number1679601983
Entity typeIndividual (Type 1)
GenderMale
Credentials DO
Sole proprietorNo
NPI enumeratedFebruary 28, 2007
Last updated in NPPESJuly 10, 2026
Certification dateJuly 10, 2026

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyEMERGENCY MEDICINE
Medical schoolMICHIGAN STATE UNIVERSITY COLLEGE OF HUMAN MEDICINE
Graduated 1984 (42 years in practice)
Group practice Mayo Clinic Health System-Northwest Wisconsin Region Inc — 799 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients79
Services billed 141 a service is one billed item, such as a visit, a test or a procedure
Average patient age72

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Payments from drug and device companies, 2025

Drug and device makers are required by federal law (the Physician Payments Sunshine Act) to report what they pay or give to clinicians, and CMS publishes the reports as Open Payments. This is the 2025 program year. A report is a record of a payment, not an allegation of anything, and many are small items such as meals. Only general payments are listed here; research payments and ownership or investment interests are reported separately by CMS and are not shown.

Food and Beverage $71 1 payment · a meal or drink at a meeting or visit, not a fee

Each amount is the sum of what companies reported for that kind of payment in 2025, rounded to the dollar. Not all of it is income to the clinician: a meal is not a fee, a charitable contribution goes to a charity, and a royalty or an acquisition payment is not a salary.

Check a report, or dispute one, at the source in CMS’s own tool, Open Payments. Corrections go through CMS’s dispute process. This site removes a home address on request and asks for no proof, because that is privacy; it will not remove an accurate payment report on request, because that is a statutory public disclosure.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician. Those with a page here are linked.

  • Mayo Clinic Health System-Red Cedar Inc Hospital · Menomonie, WI · listed as Mayo Clinic Health System-Northwest Wisconsin Region, Inc
  • Mayo Clinic Health System Eau Claire Hospital Hospital · Eau Claire, WI
  • Mayo Clinic Health System-Northland Hospital · Barron, WI

Colleagues at Mayo Clinic Health System-Northwest Wisconsin Region Inc

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 799 clinicians in the practice; 12 are shown here.

Other providers in Eau Claire